Abstract
Inspired by sliding mode techniques, a nonlinear exact disturbance observer is proposed. The disturbance and its derivatives up to the second order are assumed to be bounded. However, the bounds of the disturbance and its derivatives are unknown, and they are adaptively estimated online during the observation of the disturbances. The exact convergence of the disturbance observer to the genuine disturbance is assured theoretically. The convergence speed of the disturbance estimation error is controlled by design parameters. The proposed method is robust to the type of disturbance and is easy to be implemented. Computer simulation results show the superiority and effectiveness of the proposed formulation.
| Original language | English |
|---|---|
| Article number | 651601 |
| Journal | Mathematical Problems in Engineering |
| Volume | 2015 |
| DOIs | |
| Publication status | Published - 2015 |
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ASJC Scopus subject areas
- Mathematics(all)
- Engineering(all)
Cite this
A nonlinear exact disturbance observer inspired by sliding mode techniques. / Chen, Xinkai.
In: Mathematical Problems in Engineering, Vol. 2015, 651601, 2015.Research output: Contribution to journal › Article
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TY - JOUR
T1 - A nonlinear exact disturbance observer inspired by sliding mode techniques
AU - Chen, Xinkai
PY - 2015
Y1 - 2015
N2 - Inspired by sliding mode techniques, a nonlinear exact disturbance observer is proposed. The disturbance and its derivatives up to the second order are assumed to be bounded. However, the bounds of the disturbance and its derivatives are unknown, and they are adaptively estimated online during the observation of the disturbances. The exact convergence of the disturbance observer to the genuine disturbance is assured theoretically. The convergence speed of the disturbance estimation error is controlled by design parameters. The proposed method is robust to the type of disturbance and is easy to be implemented. Computer simulation results show the superiority and effectiveness of the proposed formulation.
AB - Inspired by sliding mode techniques, a nonlinear exact disturbance observer is proposed. The disturbance and its derivatives up to the second order are assumed to be bounded. However, the bounds of the disturbance and its derivatives are unknown, and they are adaptively estimated online during the observation of the disturbances. The exact convergence of the disturbance observer to the genuine disturbance is assured theoretically. The convergence speed of the disturbance estimation error is controlled by design parameters. The proposed method is robust to the type of disturbance and is easy to be implemented. Computer simulation results show the superiority and effectiveness of the proposed formulation.
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UR - http://www.scopus.com/inward/citedby.url?scp=84930649570&partnerID=8YFLogxK
U2 - 10.1155/2015/651601
DO - 10.1155/2015/651601
M3 - Article
VL - 2015
JO - Mathematical Problems in Engineering
JF - Mathematical Problems in Engineering
SN - 1024-123X
M1 - 651601
ER -